Few people know that there are federal safety limits for exposure to the weak radiation emitted by cellphones and other wireless devices. There often is language about this embedded right in our phones, but finding it requires knowing where to look, wading through sometimes five or more steps and then making sense of the technical jargon.

Early on Feb. 2, 2016, a van carrying members of the California Conservation Corps paused at a stop sign on a country road near the Central Valley town of Reedley. Then the van rolled into the intersection, where it was broadsided by a 40-ton gravel truck and trailer, killing three corps members …

In its newsletters and magazines, in congressional testimony and on its website, AARP warns seniors about deceptive direct mail and other dubious marketing come-ons as part of its mission to protect members from financial abuses.

The victims include a Bible college student in Iowa who was bicycling home from work, a 13-year-old Michigan boy riding in his older sister’s car and a Minnesota school bus driver picking up the morning newspaper in front of his home.

In the early 1970s, a Johnson & Johnson official posed a question that haunts the company today. If Johnson's Baby Powder contained asbestos at a level of, say, 1 percent, how much of the cancer-causing substance would a baby inhale when dusted with the powder?

When her black cat rapidly dropped from a healthy 14 pounds to a skeletal five pounds, it was natural for Arlene Blum to investigate whether a toxic chemical in her home might be to blame. The veterinarian’s diagnosis raised that possibility, and Blum had expertise in the harm that chemicals can cause. Her research as a chemist in the 1970s helped reveal the possible health hazards posed by flame retardants used in children’s sleepwear.

In the early 1900s, a young dentist named Frederick McKay moved to a Colorado town where the residents’ teeth — though in some cases stained chocolate brown — had far less decay than was typical back then. He and other researchers eventually linked the phenomenon to fluoride in the town’s drinking water – a eureka moment that would usher in what is often called one of the 10 great public health achievements of the 20th century.

As an attorney representing California Central Valley farmers and labor contractors who rely heavily on undocumented workers, Anthony Raimondo has become widely known for performing a sort of magic trick. He can sometimes make legal complaints against his clients – and the people who file them – disappear.

Without saying why, federal traffic safety officials have quietly altered crash data, revealing that more than three times as many people die in wrecks linked to tire failures than previously acknowledged.

A conviction for domestic violence in the U.S. strips a person of the legal right to possess a gun. It doesn't matter if the conviction is a misdemeanor or a felony. The rationale for the federal law: Domestic violence is a red flag for future violence — including potentially deadly violence with a firearm.

Despite mounting casualties from crashes of recreational off-highway vehicles, the U.S. Consumer Product Safety Commission has shot down a proposal to track injuries and deaths involving the popular trail machines.